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View Full Version : 3000 NiMh cell longevity


FilthyPierre
09-24-2001, 03:34 AM
At the track yesterday, I was talking to a couple of guys who were bitterly complaining that their $150-plus matched cells were running out of steam after about 30 charges. Basically, they cells are useless after being used that many times. I found this difficult to believe, but they were adamant. Their cells were the Panasonic type, but were sure that the Sanyo's do it too.
And, by way of "proof", one other dude with Sanyo 3000's (Fantom matched), was leading a stock race when his battery carked it on the final lap. He was astounded - this guy wins lots, has good gear and knows how to maintain his equipment. His charger is a Millenium and he couldn't figure out what was wrong - his motor was fine (i.e. not comm/brush problem). No conclusive evidence it was the pack, but the Twilight Zone theme playing in the background gave it away..... :eek:

So, has anybody else experienced problems with their 3000's going belly up after 30 or so charges ???

I've just purchased 3 sets of Fantom matched 3000's and just going through the process of building the packs. I'm not real happy about what I hear...... :confused:

Oyster
09-24-2001, 06:14 AM
Hmm, haven't had a problem yet. You have to treat NIMH's different, that's a fact. But, I have many charges on my 3000's (Panasonic SMH's) and they are strong. You may ask them how many amps they were pushing into them. Also, ask what voltage the cells are showing at peak. They may be over charging them.

Anyway, treat your cells with respect and they'll last a long time.

- jon

HowieStern
09-24-2001, 08:39 AM
no, i have not had any problems like that....

i have some of the first batches of Panasonic 3000's that have been cycled far more times than 30... they have dropped off quite a bit of run-time (down to around 2200 mah) but still have more than enough for most forms of racing... they never really had much voltage to start with, so i haven't noticed too much voltage drop either... LOL...

i have several stock metals that have well over 30 cycles... and i haven't had any problems with them at all.... they have dropped a bit on run-time but nothing too major... and their voltage and IR are still in great shape...

peace out.... :)